Production of Stable Atomic Beam in Electron Beam Evaporation Process

Ohba, Hironori; Shibata, Takemasa

doi:10.1143/jjap.38.4258

Jpn. J. Appl. Phys.

1999

DOI: 10.1143/jjap.38.4258

|View full text |Cite

Production of Stable Atomic Beam in Electron Beam Evaporation Process

Hironori Ohba¹,

Takemasa Shibata²

Abstract: A search has been performed for short-lived axions with a mass between 4 and 15 MeV c-' in the 18.15 MeV isoscalar M1 transition in 'Be. Upper limits have been derived for the branching ratios and consequently for the axion-nucleon coupling parameters.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2008

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Effect of periscope reflecting mirror on uncertainty of measured temperature of an electron beam heated metal vapor source

Dikshit¹,

Zende²,

Bhatia³

et al. 2008

Meas. Sci. Technol.

View full text Add to dashboard Cite

The temperature of the hot zone created by impact of a high power density electron beam (e-beam) needs to be monitored for reasons concerning process evaluation and safety. In high throughput e-beam evaporators, direct line of sight viewing of the hot zone using an optical pyrometer on a continuous basis is ruled out due to opacity introduced by rapid coating of the vacuum windows within a few seconds. An alternative that permits continuous visual monitoring relies on a periscopic arrangement that makes use of process generated thin film mirror formed by deposition of evaporating metal atoms. This paper discusses the additional error introduced by the thin film mirror during this type of monitoring arrangement for the case when a two-color pyrometer is used as temperature sensor. The dominant factors, namely temperature, pressure and reactivity of metal being evaporated, which affect the measured temperature are found and their effects are confirmed through our experimental data. It is shown that due to dynamically changing spectral reflectivity of the thin film mirror, the additional error in measured temperature could be in the range of ∼0–35% of the value recorded by direct viewing method depending upon the above parameters. Finally, as an alternative, we propose a novel method and show through calculations that this method avoids errors experienced in the periscopic method and yet allows extended continuous monitoring time.

show abstract

Effect of periscope reflecting mirror on uncertainty of measured temperature of an electron beam heated metal vapor source

Dikshit¹,

Zende²,

Bhatia³

et al. 2008

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Production of Stable Atomic Beam in Electron Beam Evaporation Process

Abstract: A search has been performed for short-lived axions with a mass between 4 and 15 MeV c-' in the 18.15 MeV isoscalar M1 transition in 'Be. Upper limits have been derived for the branching ratios and consequently for the axion-nucleon coupling parameters.

Cited by 1 publication

References 13 publications

Effect of periscope reflecting mirror on uncertainty of measured temperature of an electron beam heated metal vapor source

Effect of periscope reflecting mirror on uncertainty of measured temperature of an electron beam heated metal vapor source

Contact Info

Product

Resources

About